nttdatapay/nttdatapay-mcp-server

NDPSI Payment Knowledge MCP Server

A Model Context Protocol (MCP) server that provides comprehensive NDPSI payment API documentation and implementation guidance for AI assistants. This server enables Claude and other MCP-compatible AI tools to access payment processing documentation, encryption specifications, API references, and implementation examples.

Overview

This MCP server serves as a knowledge base for payment system implementation, providing structured access to:

• Payment API Specifications - Complete endpoint documentation and schemas
• Encryption Standards - Security requirements and implementation guidelines
• Processing Flows - Step-by-step payment transaction workflows
• Error Handling - Comprehensive error codes and troubleshooting guides
• Signature Implementation - Request signing and validation procedures

Use Cases

API Implementation & Development

• Language-specific implementations: "How do I implement this payment API in TypeScript/Python/Java?"
• Feature-by-feature guidance: Get tailored code examples for specific payment functionalities
• Best practices: Access recommended patterns and security considerations

Payment Flow Understanding

• System architecture: Understand server-client communication patterns in payment systems
• Domain knowledge: Get explanations of payment-specific concepts (e.g., "What is an atomToken?")
• Process visualization: Step-by-step breakdowns of complex payment workflows
• Integration guidance: Learn how different payment components interact

Reference & Documentation

• Quick lookups: Instant access to API specifications and error codes
• Implementation examples: Ready-to-use code snippets and templates
• Troubleshooting: Error resolution guides and debugging tips

Quick Start

Claude Desktop (Recommended)

1. Download Claude Desktop

   • Available free at claude.ai
   • Works with both free and paid accounts

2. Download the Extension

   • Download the .dxt file from the nttdatapay github

3. Install Extension

   • Easy method: Right-click the .dxt file → "Open with" → Select Claude Desktop → Install
   • Manual method: Open Claude Desktop → Settings → Extensions → Advanced Settings → Install Extension → Select the .dxt file → Install

4. Start Using

   • Access tools via the tools menu in Claude
   • Try asking: "Visualize the payment flow in NDPSI"
   • Use prompts: Try "Create fruit shop app" to see the server in action
   • Reference resources: Ask Claude to check specific payment documentation

Other AI Platforms

For integration with ChatGPT, GitHub Copilot, or other MCP-compatible platforms:

• Use the provided src/index.js server file
• Follow your platform's MCP server integration guide
• Ensure Node.js runtime availability

Features

Tools

• get_payment_context - Retrieve complete payment implementation documentation

Prompts

• demo-create-fruit-shop-app - Generate an e-commerce application example with NDPSI payment integration

Resources

• payment://docs/flow - NDPSI Payment processing workflow documentation
• payment://docs/api-spec - Complete API specification
• payment://docs/encryption - Encryption and security requirements
• payment://docs/signature - Request signature implementation guide
• payment://docs/error-codes - Error codes and troubleshooting
• payment://docs/all - Combined documentation resource

Security & Privacy

What This MCP Server Accesses

• Package contents only - Limited to the docs/ folder within the extension package
• Static documentation - Read-only access to included Markdown files
• No external connections - No internet access or external API calls

Security Design

• Principle of least privilege - Accesses only packaged documentation files
• Open source transparency - Full source code available on GitHub
• Local execution - Runs as a local Node.js process within Claude Desktop
• Standard permissions - Uses only standard file access permissions granted by Claude Desktop

Technical Considerations

• Runtime environment - Executes as a Node.js process with standard system permissions
• File system access - Limited to the extension's package directory
• Process isolation - Runs in Claude Desktop's managed extension environment

Project Structure

payment-knowledge-mcp/
├── src/
│   └── index.js              # MCP server implementation
├── docs/
│   └── payment-api-guides/   # Documentation files
│       ├── get_payment_flow.md
│       ├── get_api_specification.md
│       ├── get_encryption_specification.md
│       ├── get_signature_guide.md
│       └── get_error_codes.md
├── manifest.json             # DXT extension configuration
├── package.json              # Node.js dependencies
└── README.md                 # This file

License

This project is licensed under the MIT License - see the file for details.

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Built with the Model Context Protocol | Compatible with Claude Desktop | Open Source